2 * This file is part of the PulseView project.
4 * Copyright (C) 2017 Soeren Apel <soeren@apelpie.net>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, see <http://www.gnu.org/licenses/>.
20 #include "globalsettings.hpp"
22 #include <QApplication>
24 #include <QFontMetrics>
33 const QString GlobalSettings::Key_View_ZoomToFitDuringAcq = "View_ZoomToFitDuringAcq";
34 const QString GlobalSettings::Key_View_ZoomToFitAfterAcq = "View_ZoomToFitAfterAcq";
35 const QString GlobalSettings::Key_View_ColouredBG = "View_ColouredBG";
36 const QString GlobalSettings::Key_View_StickyScrolling = "View_StickyScrolling";
37 const QString GlobalSettings::Key_View_ShowSamplingPoints = "View_ShowSamplingPoints";
38 const QString GlobalSettings::Key_View_ShowAnalogMinorGrid = "View_ShowAnalogMinorGrid";
39 const QString GlobalSettings::Key_View_DefaultDivHeight = "View_DefaultDivHeight";
40 const QString GlobalSettings::Key_View_DefaultLogicHeight = "View_DefaultLogicHeight";
41 const QString GlobalSettings::Key_Dec_InitialStateConfigurable = "Dec_InitialStateConfigurable";
43 multimap< QString, function<void(QVariant)> > GlobalSettings::callbacks_;
44 bool GlobalSettings::tracking_ = false;
45 map<QString, QVariant> GlobalSettings::tracked_changes_;
47 GlobalSettings::GlobalSettings() :
50 beginGroup("Settings");
53 void GlobalSettings::set_defaults_where_needed()
55 // Enable zoom-to-fit after acquisition by default
56 if (!contains(Key_View_ZoomToFitAfterAcq))
57 setValue(Key_View_ZoomToFitAfterAcq, true);
59 // Enable coloured trace backgrounds by default
60 if (!contains(Key_View_ColouredBG))
61 setValue(Key_View_ColouredBG, true);
63 // Enable showing sampling points by default
64 if (!contains(Key_View_ShowSamplingPoints))
65 setValue(Key_View_ShowSamplingPoints, true);
67 if (!contains(Key_View_DefaultDivHeight))
68 setValue(Key_View_DefaultDivHeight,
69 3 * QFontMetrics(QApplication::font()).height());
71 if (!contains(Key_View_DefaultLogicHeight))
72 setValue(Key_View_DefaultLogicHeight,
73 2 * QFontMetrics(QApplication::font()).height());
76 void GlobalSettings::register_change_handler(const QString key,
77 function<void(QVariant)> cb)
79 callbacks_.emplace(key, cb);
82 void GlobalSettings::setValue(const QString &key, const QVariant &value)
84 // Save previous value if we're tracking changes,
85 // not altering an already-existing saved setting
87 tracked_changes_.emplace(key, QSettings::value(key));
89 QSettings::setValue(key, value);
91 // Call all registered callbacks for this key
92 auto range = callbacks_.equal_range(key);
94 for (auto it = range.first; it != range.second; it++)
98 void GlobalSettings::start_tracking()
101 tracked_changes_.clear();
104 void GlobalSettings::stop_tracking()
107 tracked_changes_.clear();
110 void GlobalSettings::undo_tracked_changes()
114 for (auto entry : tracked_changes_)
115 setValue(entry.first, entry.second);
117 tracked_changes_.clear();
120 void GlobalSettings::store_gvariant(QSettings &settings, GVariant *v)
122 const GVariantType *var_type = g_variant_get_type(v);
123 char *var_type_str = g_variant_type_dup_string(var_type);
125 QByteArray var_data = QByteArray((const char*)g_variant_get_data(v),
126 g_variant_get_size(v));
128 settings.setValue("value", var_data);
129 settings.setValue("type", var_type_str);
131 g_free(var_type_str);
134 GVariant* GlobalSettings::restore_gvariant(QSettings &settings)
136 QString raw_type = settings.value("type").toString();
137 GVariantType *var_type = g_variant_type_new(raw_type.toUtf8());
139 QByteArray data = settings.value("value").toByteArray();
141 gpointer var_data = g_memdup((gconstpointer)data.constData(),
144 GVariant *value = g_variant_new_from_data(var_type, var_data,
145 data.size(), false, g_free, var_data);
147 g_variant_type_free(var_type);